Saw for removing stumps.



J. M. WHITE.

SAW FOR REMOVING STUMPS.

APPLICATION FILED 141131 1908.

Patented 001;; 20,1908.

minus-411mm 1.

J} M. WHITE." SAW FOR REMOVING STUMPS.

I APPLICATION PILED'JAILSI, 1908 Patented Oct. 20,

2 SHEBTS-SHEET 2.

' To all whom may concern:

" aen; the UnitedQSt-at'es, residing at S ma L in the county of Josephine and State of i re I gen, mel ine-a certain new a i-idtuseful I Improvements v in cation.

of the ground man .A ens c l ionN nevi-urn, creat ng, censor.

Specification of ii'etters Patent 5 non REMovINs s'r -MPs.

Paeentedoc'a v2o, 1908. v

Application filed January 31, 19 0 8. Serial 0. 413, 5 82.

' Beit known" hat- I, J onN Saws W for Removing. Stumps,ofwlnch the following is a spec fi The present invention has relation' to means for clearmg land and more particu larly to devices for removing stumps .of

trees, by cutting off the portion projectingabove thesoil in contradistinction to means for extracting the stump and roots.-

whiclrwillocut'the stump belowthe surface thoutthe latter interfering ma; the. operation of the saw blade, the cutresnlting" in the end of the stump removed having, alronnded' appearance, and the end remaining in the soil presenting a cup-- shaped f0rrn. 1

In accordance with this" invention a frame is mounted to swing about a given center and is provided with-a curved saw blade formed on the arc of acircle having itscenter' coincident with the point of-suspension of said "frame.

The invention also consists of-lneans for imparting an oscillatory movement to the saw frame, for guiding the same inits oscillatory movements and means for positively feeding the saw as the work'progresses. v

For a full'understanding of the invention and the merits thereof andfl'also to hcq'uire a knowledge of the details of constructionand' the means a for effecting the result, 1 reference is to be had to the following description and accompanying drawings.

lVhile the invention may be adaptedtodifferent forms and conditions by changes in the structure and minor details without departin from the spirit-or essential features thereof still the preferred embodiment is shown -in the accompanying drawings in which: v I

Figure 1 is a perspective View of a sawing machine I specially designed for removing stumps and embodying the essence of the invention. Fig. 2 is a front view of the ma chine.

Corresponding andlike parts arereferred to in the following description and indicated mall the views of the drawings by.

'the'same refei'ence'characters.

The saw frame 1 is suspended at' 2,' by

-The present nvention provides a sa\v 1s rigidly connected.

means of a universal joint to admit ofihe frame moving freely in all directions about throughout its length on the are of a circle whose center coincides with the point 2 from which the saw frame is suspen'dexl. A suit-' able frameworkd support-s thesaiv frame a given point; A saw blade 3 is attached in* any convemenland substantial ninnncii tothe lower end ofthe saw frame and is curved and-comprises an upright portion 5 and an overhangii-ig portion toiwhich the saw frame is directlyconnected by the point 2. A base right portion 5 of the saw carrying frame The carriage 8' 1s adapted to travel in the arc of :a circle having its. center coincident with 'the point of suspensitm of the saw frame, thereby preventing any binding of the saw blade in the operation of the machine. Movement of the carriage S in one direction feeds the saw and movement of the carriage in the opposite directionreturns the saw to a normal position ready for the next out. The carriage may-be advanced and returned to agiven' position by any-mechanism; such as com- .monly employed for operating saw mill can riages. As'showm operatingcords or like connections 9 passaround guide pulleys 10 at the ends. of the Ways 7 and have theirends (Sis provided with ways '7 which are curved and'support' a; carriage 8 to winch the upconnected to drums 11 fast to a shaft 12 which is adapted to be alternately driven in opposite direct ons in any well. known man ner, so as to w nd and unwind the ropes or connections 9' and effect a reciprocating inoveme'nt of the carriage 8 on the ways 7. Thesaw frame 1 may be oscillated in any 1nanner,-preferably by means mounted upon thecarriageS. lathe present instance, an engine 13 mounted upon the carriage S and movable therewith, isconnected by pitman 11 with a side bar of the frame. The engine is of the reciprocating type. To properly direct the saw frame in its oscillatory movements, a guide is provided and consists of a bar 14 having a curved fork 15, the latter being curved on the arc of a circle having its suspenslon 105 center coincident with a point of or oscillation. of the saw f 'an1e. .'I-l1e bar 14: is connected to the carriage so as to move, therewith, and the fork 15 projects from c said carriage to engage with the saw frame and .give proper direction thereto.

,lVhen positioning the machine to remm a .stump, it is arranged so that the polnt of suspension line with the center of the stump so that a perpendicular line passed through the center of oscillation of the saw frame will also pass.

through the center of the stump. As a result of th1s arrangement, the'saw, at, the beginning of. the cut willenter the'stump ata' point corresponding approximately to the surface of the ground and will-gradually descend until the center -'of the same is reached, when it will graduall rise and emerge from the opposite side 0 the stump 'aboutin the 'plane .of the surface of the ground. vThe end of the stump removed will be convex or'spheroidal in form, whereas the end of the stump remai'nin in the ground will be concave or of cuporm, below the surface will soon rot. I

. The saw frame is braced to provide a substantial structure and avoid the necessity of a heavy and cumbersome joint atthe point of convergence of the side members thereof.

The saw blade 3' is arranged about at a right .paratively narrow. so as angle tojthe plane of movement of the saw frame and is made unusually thick and comto maintain the curved formv and to operate freely in. the kerfn It is proposed to operate the machine in .land free from stones and tically adjusting the structure, the saw may be regulated to cut the roots of the stump and to thereby obviate the necessity of cutting through the body of the stump.

Having thus described the invention, is claimed as new is:

' 1. In a machine of the character specified,

2 of'the saw frame is about in and .being grit.'. By vera saw blade. formed on'the arc of. a circle and suspended by means of 'a universal joint so as to oscillate and move laterally to the plane of oscillation, "vance's'to its work "on b ade, coinciding with the center of movement thereof in every direction.

by means of a universal joint, curved ways,

curved ways, means mounted uponthe carframfe, and a to the saw guide carried by frame in its movement; a

what

inpresence of two witnesses. JOHN M. WHITE. [1,. a] Witnesses:

. ROBERT C. Cnun'cn'rm,

ERNEST MASTIN.

whereby the saw adfor moving the carsaid carriage and adaptedto direct the saw In testimony'whereof .I aflix my signature.

4.0' a curved line corre s ondlng with the curvature of the saw the point of suspension of the saw I '45 2. In a machine of the character specified, v

a point coinciding with the center of the frame, a' guide projected from the carriage of the said saw blade. 3. In combinat on, a saw frame suspended -6C a carriage mounted to reciprocate upon said riage for imparting an oscillatory movement 

